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<TITLE>Tutorial code sample 2</TITLE>
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<img src="spacer.gif" width="8" height="1">Tutorial code sample 2</strong></font></td></tr></table>
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<FONT FACE="Geneva, Verdana, Arial, Helvetica, sans-serif" size="2" CLASS="G10" COLOR="#3366CC"><strong>Connecting, reading, and parsing network messages.
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<BR><BR>
The target of this exercise was to add the following features to sample 1:
<OL>
<LI>Create a main loop for the program.
<LI>Call Receive and store the pointer returned in a pointer variable of type Packet. Note that we continually call Receive() until no further packets are returned. A common mistake is to only call it once.
<LI>Include the header file to use struct Packet
<LI>If a packet arrived, check the first byte of Packet::data, and process accordingly. The list of enumerations is in MessageIdentifiers.h.
<LI>Print out the comment that goes along with the enumeration.
<LI>Deallocate the packet pointer when done with it.
</OL>
New code over sample 1 is in bold.
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<PRE><FONT FACE="Geneva, Verdana, Arial, Helvetica, sans-serif" size="1" CLASS="G10" COLOR="#111122">



#include &lt;stdio.h&gt;
<strong>#include &lt;string.h&gt;</strong>
#include "RakPeerInterface.h"
<strong>#include "MessageIdentifiers.h"</strong>

#define MAX_CLIENTS 10
#define SERVER_PORT 60000

int main(void)
{
	char str[512];

	RakNet::RakPeerInterface *peer = RakNet::RakPeerInterface::GetInstance();
	bool isServer;
	<strong>RakNet::Packet *packet;</strong>
	
	printf("(C) or (S)erver?\n");
	gets(str);

	if ((str[0]=='c')||(str[0]=='C'))
	{
		RakNet::SocketDescriptor sd;
		peer-&gt;Startup(1,&amp;sd, 1);
		isServer = false;
	} else {
		RakNet::SocketDescriptor sd(SERVER_PORT,0);
		peer-&gt;Startup(MAX_CLIENTS, &amp;sd, 1);
		isServer = true;
	}

	<strong>
	if (isServer)
	{
		printf("Starting the server.\n");
		// We need to let the server accept incoming connections from the clients
		peer-&gt;SetMaximumIncomingConnections(MAX_CLIENTS);
	} else {
		printf("Enter server IP or hit enter for 127.0.0.1\n");
		gets(str);
		if (str[0]==0){
			strcpy(str, "127.0.0.1");
		}
		printf("Starting the client.\n");
		peer-&gt;Connect(str, SERVER_PORT, 0,0);

	}

	while (1)
	{
		for (packet=peer-&gt;Receive(); packet; peer-&gt;DeallocatePacket(packet), packet=peer-&gt;Receive())
		{
			switch (packet-&gt;data[0])
				{
				case ID_REMOTE_DISCONNECTION_NOTIFICATION:
					printf("Another client has disconnected.\n");
					break;
				case ID_REMOTE_CONNECTION_LOST:
					printf("Another client has lost the connection.\n");
					break;
				case ID_REMOTE_NEW_INCOMING_CONNECTION:
					printf("Another client has connected.\n");
					break;
				case ID_CONNECTION_REQUEST_ACCEPTED:
					printf("Our connection request has been accepted.\n");
					break;					
				case ID_NEW_INCOMING_CONNECTION:
					printf("A connection is incoming.\n");
					break;
				case ID_NO_FREE_INCOMING_CONNECTIONS:
					printf("The server is full.\n");
					break;
				case ID_DISCONNECTION_NOTIFICATION:
					if (isServer){
						printf("A client has disconnected.\n");
					} else {
						printf("We have been disconnected.\n");
					}
					break;
				case ID_CONNECTION_LOST:
					if (isServer){
						printf("A client lost the connection.\n");
					} else {
						printf("Connection lost.\n");
					}
					break;
				default:
					printf("Message with identifier %i has arrived.\n", packet-&gt;data[0]);
					break;
				}
		}
	}
	</strong>
	
	RakNet::RakPeerInterface::DestroyInstance(peer);

	return 0;
}





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